mal-2025-6440
Vulnerability from ossf_malicious_packages
Published
2025-06-07 14:05
Modified
2025-12-11 09:27
Summary
Malicious code in atlasctf-21-prod-03 (PyPI)
Details

-= Per source details. Do not edit below this line.=-

Source: kam193 (374fe69b5719748c5255c0665469e0e45e3064884ece003a7fbfc56c04d3a93b)

On installation or importing, the package attempts to exfiltrate some basic information, e.g. /etc/passwd


Category: PROBABLY_PENTEST - Packages looking like typical pentest packages, but also anything that looks like testing, exploring pre-prepared kits, research & co, with clearly low-harm possibilities.

Campaign: 2025-06-atlasctf

Reasons (based on the campaign):

  • exfiltration-generic

  • The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.

  • The package overrides the install command in setup.py to execute malicious code during installation.


{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "atlasctf-21-prod-03",
        "purl": "pkg:pypi/atlasctf-21-prod-03"
      },
      "versions": [
        "99.99.99",
        "99.99.99.1"
      ]
    }
  ],
  "credits": [
    {
      "contact": [
        "https://github.com/kam193",
        "https://bad-packages.kam193.eu/"
      ],
      "name": "Kamil Ma\u0144kowski (kam193)"
    },
    {
      "contact": [
        "https://github.com/kam193",
        "https://bad-packages.kam193.eu/"
      ],
      "name": "Kamil Ma\u0144kowski (kam193)",
      "type": "ANALYST"
    },
    {
      "contact": [
        "https://www.reversinglabs.com"
      ],
      "name": "ReversingLabs",
      "type": "FINDER"
    }
  ],
  "database_specific": {
    "malicious-packages-origins": [
      {
        "id": "RLMA-2025-03525",
        "import_time": "2025-08-01T10:07:09.189695256Z",
        "modified_time": "2025-07-31T19:14:04Z",
        "sha256": "f93a59fd0d977a1b6874633344c4de56029d52ad2128dd62adf6031acb536c52",
        "source": "reversing-labs",
        "versions": [
          "99.99.99",
          "99.99.99.1"
        ]
      },
      {
        "id": "pypi/2025-06-atlasctf/atlasctf-21-prod-03",
        "import_time": "2025-12-02T22:30:55.844484889Z",
        "modified_time": "2025-06-07T14:05:45Z",
        "ranges": [
          {
            "events": [
              {
                "introduced": "0"
              }
            ],
            "type": "ECOSYSTEM"
          }
        ],
        "sha256": "0faa41ecc59c3b480580d8454b8773c85e9ccbfedf0ce85c715e08b075f135ef",
        "source": "kam193"
      },
      {
        "id": "pypi/2025-06-atlasctf/atlasctf-21-prod-03",
        "import_time": "2025-12-02T23:07:19.024779079Z",
        "modified_time": "2025-06-07T14:05:45Z",
        "ranges": [
          {
            "events": [
              {
                "introduced": "0"
              }
            ],
            "type": "ECOSYSTEM"
          }
        ],
        "sha256": "374fe69b5719748c5255c0665469e0e45e3064884ece003a7fbfc56c04d3a93b",
        "source": "kam193"
      },
      {
        "id": "pypi/2025-06-atlasctf/atlasctf-21-prod-03",
        "import_time": "2025-12-10T21:38:58.169570894Z",
        "modified_time": "2025-06-07T14:05:45Z",
        "sha256": "94d0ac117b393c6191ece0e535a192d69d5c2de3116dd99b900cb26416946744",
        "source": "kam193",
        "versions": [
          "99.99.99",
          "99.99.99.1"
        ]
      }
    ]
  },
  "details": "\n---\n_-= Per source details. Do not edit below this line.=-_\n\n## Source: kam193 (374fe69b5719748c5255c0665469e0e45e3064884ece003a7fbfc56c04d3a93b)\nOn installation or importing, the package attempts to exfiltrate some basic information, e.g. /etc/passwd\n\n\n---\n\nCategory: PROBABLY_PENTEST - Packages looking like typical pentest packages, but also anything that looks like testing, exploring pre-prepared kits, research \u0026 co, with clearly low-harm possibilities.\n\n\nCampaign: 2025-06-atlasctf\n\n\nReasons (based on the campaign):\n\n\n - exfiltration-generic\n\n\n - The package contains code to exfiltrate basic data from the system, like IP or username. It has a limited risk.\n\n\n - The package overrides the install command in setup.py to execute malicious code during installation.\n",
  "id": "MAL-2025-6440",
  "modified": "2025-12-11T09:27:52Z",
  "published": "2025-06-07T14:05:45Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://bad-packages.kam193.eu/pypi/package/atlasctf-21-prod-03"
    }
  ],
  "schema_version": "1.7.4",
  "summary": "Malicious code in atlasctf-21-prod-03 (PyPI)"
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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